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Finding the Fourth Proportional to 48,645.60, 72,968.19 and 11,709.60

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Solution

The fourth proportional to 48,645.60, 72,968.19 and 11,709.60 is: 17,564.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,645.60 : 72,968.19 = 11,709.60 : x
  2. Step 2: Convert to fraction form
    48,645.60/72,968.19 = 11,709.60/x
  3. Step 3: Cross multiply
    48,645.60x = 72,968.19 × 11,709.60
  4. Step 4: Simplify right side
    48,645.60x = 854,428,317.62
  5. Step 5: Solve for x
    x = 854,428,317.62/48,645.60
  6. Step 6: Final answer
    x = 17,564.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.